where M and U are the Kummer functions [1]}
with the argument of
\(\omega = \frac{x-b(t)}{c(t)} = \frac{x}{ \sqrt{2 \tilde{C}_3 t +c_1} } - \frac{c_2}{ \sqrt{2 \tilde{C}_3 t +c_1} }- \frac{}{} \frac{ \tilde{C}_2 }{\tilde{C}_3}.\) 
